Stopper



C. HOPPES July 17, 1951' STOPPER 2 Sheets-Sheet 1 Filed Aug. 25, 1949CARL HOPPES INVENTOR ATTORNEY July 17, 1951 c. HOPPES 2,560,867

STOPPER Filed Aug. 25, 1949 2 Sheets-Sheet 2 I mug? CARL PPES VENTORBYWW ATTORNEY Patented July 17, 1951 Carl Hoppes, Ashland, Ohio,assignor to The Faultless Rubber Company, Ashland, Ohio, a

corporation of Ohio Application August 25, 19 49, Serial. No.,112,385

3 Claims.

My invention relates to stoppers for water hottles or other devices, andthe principal object of my invention is to provide a stopper affordingenhanced sealing.

In the drawing accompanying this specification and forming a part ofthis application I have shown for purposes of illustration what I nowconsider to be the best manner of carrying my invention into practice,and in this drawing:

Figure 1 is a view of the upper part of a hot water bottle including theillustrated form of stopper;

Figure 2 is a general view of the stopper of Figure 1 but omitting theannular washer;

Figure 3 is a general view of the washer;

Figure 4 is a general view of the assembled stopper including thewasher;

Figure 5 is an enlarged sectional view indicating the relations uponinsertion of the stopper into engaging position; and- Figure 6 is a viewsimilar to Figure 5 but indicating the relations when the stopper hasbeen further inserted.

In the drawing I have shown a usual water bottle I l formed of softrubber and provided with a mouth l2 in which is secured a relativelystiff rubber block I3 in which is positioned a sheet metal member l4providing the bottle opening l5 and formed with pressed threads I6 forscrewthreadedly receiving the stopper 20.

As herein shown this stopper 20 comprises a body 2| formed of relativelystifi rubber, provided on its inner portion 22 with external screwthreads 23 constructed to cooperate with the threads 16 of the sheetmetal member l4, provided outwardly of the portion 22 with an annularrecess 24 constructed to receive an annular soft rubber washer 25, andprovided at its outer end with a suitable grip 26.

As shown in Figure 5, upon insertion of the stopper the outer face 21 ofthe washer 25 comes into engagement with the outer end 28 of the sheetmetal member [4, resulting in a nominal closure of the opening.

However, according to my invention, the bottom 29 and outer side 30 ofthe recess 24 are disposed an an angle materially greater than ninetydegrees, whereby upon further insertion of the stopper, as indicated inFigure 6, the material of the washer 25 is resiliently deformed tosubstantially overlie the outer end 28 of the member l4 and effectenhanced and satisfactory closure of the opening.

Also according to my invention the further in sertion of the stopper isfacilitated by forming the washer 25 rotatable in the recess 24, topermit the body 2! upon further insertion of the stopper to turn withinthe washer 25 and permit the washer 25 to remain stationary relative tothe outer end 28 of the member [4, and to facilitate such rotation ofthe body 2| within the washer 25, the washer 25 is formed of a rubbercomposition including a material proportion of wax or other suitablematerial serving perpetually to substantially reduce friction betweenthe body 2| and the washer 25.

As appears from the drawing, in the illustrated embodiment the describedangle between the outer side 30 and bottom 29 of the recess 24 isaccomplished by disposing the bottom 29 at an angle of approximatelyfifteen degrees to the axis of the stopper and the outer side 30approximately perpendicular to the axis of the stopper, thus providingan angle of approximately one hundred and five degrees between the outerside 30 and bottom 29 of the recess 24.

According to present experience, the angle between the outer side 30 andbottom 29 of the recess 24 desirably should not be less thanapproximately one hundred degrees, also the outer side 30 desirablyshould not extend at an angle below the perpendicular to the axis of thestopper.

As appears from the drawing, in the present embodiment the inner side 3|of the recess 24 is parallel to the outer side 30, the washer 25 isformed corresponding to the recess 24, and the outer face 21 of thewasher 25 is parallel to the inner face 32.

However, it is to be understood that my invention is not limited to theparticular embodiment herein shown and described, and I claim as myinvention:

1. A stopper for a water bottle or other device having an internallyscrew threaded opening, comprising a body having a cooperativelyexternally screw threaded portion and provided outwardly of said portionwith an annular recess, and an annular resiliently deformable washerseated in said recess, constructed and arranged upon insertion of saidstopper to engage the outer end of such opening, and rotatable relativeto said body to facilitate further insertion of said stopper andconsequent deformation of said washer into enhanced sealing relation.

2. A stopper for a water bottle or other device having an internallyscrew threaded opening, comprising a body having a cooperativelyexternally screw threaded portion and provided outwardly of said portionwith an annular recess, and an annular resiliently deformable washerhaving an internally screw threaded mnening,

seated in said recess, constructed and arranged washer into enhancedsealing relation, and upon insertion of said stopper to engage the outerformed of a rubber composition impregnated with end of such opening,rotatable relative to said wax to facilitate such rotation.

body to facilitate further insertion of said stop- CARL HOPPES. per andconseqent deformation of said washer 5 into enhanced sealing relation,and impregnated REFERENCES CITED with lubricant to facilitate suchrotation. The f ll in ef r n are of record in the 3. A stopper for-awater bottle ortother device t m mm patent;

comprising a body having a cooperatively ex- 10 UNITED STATES PATENTSternally screw threaded portion and provided .Number Name Date outwardlyof said portion with an annular re- 1,080,659 Schuh Dec. 9, 1913 cess,and an annular resiliently deformable 1,382,679 Schweinert June 28, 1921washer seated in said recess, COIlSIl'llQfiQdfiIldfit 1;A=1,Q,237Baldwin Mar. 21, 1922 ranged upon insertion of said stopper to .engage1;; 1,609.;836 Russell Dec. 7, 1926 the outer end of such opening,rotatable relative 9,513,985.658 Eitterer Feb. 21, 1933 to said body tofacilitate further insertion of, sai d 2,343,512 Lobl Mar. '7, 1944;

stopper and consequent deformation of said

